Automatic cross-slide-operating means.



J. en PQTTBR. AUTOMATIC GROSS SLIDE OPERATING MEANS.

l APPLIUATION FILED MAR. 7,1907. lpgys Patented Aug. 6, MM2.

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el@ iin/casco x y J. G. POTTER. AUTOMATIC CROSS SLIDE OPERATING MEANS.APPLICATION FILED MAB. 7, 1907.

Patented Aug. 6, T912.

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' J. G. POTTER.

AUTOMATIC GROSS SLIDE OPERATING MEANS APPLICATION FILED MAIL?, 1907.

Patented Aug. 6, 1912.

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JHMES- CHARLES' POTTER, OF PAWTUCKT, RHODE ISLAND, ASSIGNOR TOPO'FJJELR, & JOHNSTON MACHINE CO., OF PAWTUCKET, RHODE ISLAND, ACORPORATION OF RHODE ISLAND,

AUTOMATIC CROSS-SLIDE-OPERATING MEANS.

LGSsLOG.

Specification of Letters Patent.

Patented Aug. 6, 1912.

Application vtiled` March 7, 19,07. Serial No. 361,106.

Pawtucket7 in the county of Providence and in the State of Rhode lsland,have invented a certain new and useful Improvement in Automatic Cross-Slide- Operating Means, and do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, in Which- Figure l is a frontelevation of aportion of an automatic turret lathe embodying my invention; Fig. 2 arear elevation ofl the same; and Fig; 3 a Icross-section. A

The object of my invention lis to simplify theconstruction 4andfacilitate the adjustment of automatic cross -slide operatingmechanisms, and Ito this end my invention .consists in the mechanismconstructed substantially as hereinafter specified and claimed.

To illustrate my invention I show it embodied" in an automatic turretlathe of the class forming the subject of Patent No.`

752,257, February 16, 1904, to Potter & Johnston Machine'Co., in whichlathe the turret-carrying ,slide A mounted upon the lathe bed or frame Bis reciprocated by means of ycam/plates c secured to the periphery of a`drum C, mounted upon a shaft D, and revolved `by means of, a spur gear cattached tothe drum, ivitli which meshes a driving pinion Z'on a sha-'ftD receiving motion from some suitabley source.

Thevcross-slide E is mounted in a guide block e on thejvlathe bed, andat the rear side of the machine is projected beyond said block, andisprovided With a rack F on its underside, with which meshes a gearsegment Gon a rock ings at the rear of the machine. To rock the shaft toreciprocate the cross-slide automatically, said shaft is provided` Witha gear segment I, with Which meshes a rack 7c on the rear end of a,reciprocable bar K that vextends toward the front of the machine,

diametrically across the cam drum, and has at its end, at the front sideof the machine, a projection or roller 7c in the pat-l1 of cam plates L,adjustably secured tof/the adjacent side of the drum C, Which cams, byalternate 'engagement of the projection or roller, reciprocate the barK, andl thus rock the anwesende actuating shaft to move the crossshaft-H journaled in bearslide for feeding its tools to and from the Work,secured in the usual chuck M. The rear rack-carrying portion of the barK passes over and is supported by a friction roller N, supported by abracket aettacned to the bed of the lathe, and-the forward portion ofthebar K is slot-ted .to pass over the drum shaft D., by which it issupported at this point. The cam plates L are secured to the drum C bymeans ofbolts Z and continuous, annular T-slots c2 in the side of theAdrum C. By the mechanism described, it

will be seen that the reciprocation of the cross-slide is automaticallyeected.

For moving the cross-slide by hand, which is necessary for properlytimingr the action of the cross-slidetcols with reference to the turrettools, Athe cross-,slide at its end at'the front 'of' the machine isprovided With a rack O, with which meshes a pinion P on a shaftjournaled in the cross-slide supporting block e, and having a squaredend for the application of a crank by which to revolve the pinion tomove the cross-slide.

In adjusting the machine for Work, the

atlng pinion P, the cross-slide is moved to' place the cross-slide toolat the limit of the feed to be given it by its feeding cam L, and thenthe feeding cam L tightened in such position on the drum that its highpoint will engagel the roller on the bar K, andy the return cam Ltightened in proper position to retract the cross-slide after the feedfor cutting has been ended.

As the cam-engaging roller on the bar K isA at the front side of themachine, the manipulation-s or adjustments of the cam plates L, whichare made with reference to said bar roller, can be made by the workmanat the front of 4the machine, and as the crank shaft for adjusting theposition of the/cross- C, it will be ,seen that the adjustment of the .yn l -machine/ can be accomplished without movement of the workman fromthe front of the machine, so that the time for adjustment' of themachine is reduced to a minimum. The

mechanism for automatically moving lthe the ineens for transmittingmotion from the Cams L to the rook shaft segment I consist simply of theroller-carrying bei: K.

Although I have shown und deseribediny invention :is embodied in amachine having certain details ot construction, it. is to be undei-stood that my invention muy be embodied in machines differentlyconstructed.

Having thus described my invention, what I claim is l. In e lathe, thecombination of :i cross slide, a ber, operative connection betiyeen thebar and the Cross slide, whereby movement of the bnr'is imparted to theCross slide :ind movement of the cross slide is imparted to the bar, ndrum, Cams adapted to court with the bm' to impart. movementthereto,means connect-ing the cams Lmd the drinn whereby the Cams may be eitherfixedly secured to the-drums or loosened therefrom, and ineens foroperating` the cross slide by hand independently of the cum operatedconnections.

2. In n lathe, the combination of :L Cross slide, a bar, iperzitiveconnection between the bar and the eress slide, whereby moyement of thebnr isfiinparted to the cross .slide und movement of the cross slide isimparted to the bur, Comprising- :i rock shaft, 21 geur Connectionbetween the reel; shaft and the cross slide1 and :i gen1' connectionbetween the bar and the rook shaft, e drunn'eams adopted to. eoaet withthe bar to impart ymovement thereto, means connecting the c ing thecross slide by hand independently,

of the cam operated connections.

3. In elet-he, the combination ein Cross slide, a bnr, operativeeonneetionbetween the bnr and the cross slide, whereby movementof thecross slide is imparted to the bar, comprising a roel: shaft, a gearAConnee tion between the rock shaft. and the cross slide, and a gearconnection betweenithe bar, :md the roek shaft., the part of theber-engng'ed by theeems and hand operated means beingat the front of themachine, a, drum, cams adapted to Coact with the bar to iin-y partmovement thereto, ineens connecting the cams and the drum whereby the'Cjims may be either tixedly secured to the drums or loosened therefrom,and ineens for-perating the cross slide by liandgindepen'dently v l ofthe eem operated Connect-ions.

In testimony thatl I Chinn the foregoing I have hereunto set my hand.

.minis CHARLES ilo-"rrr: lWitnesses .EARL II. ROBERTS,

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